METHOD OF INCREASING THE OVULATION RATE OR FECUNDITY OF SOWS BY USE OF AN IMMUNOGENIC COMPOSITION

摘要

The ovulation rate in sows, especially immature sows (gilts) is increased by immunization against one or more steroidal androgens or steroidal oestrogens, by administering an immunogenic derivative or conjugate of the steroid such as a conjugate with human serum albumin or an acid anhydride or the steroid combined with an adjuvant.